@eluvio/elv-utils-js/lib/concerns/CloudAccess.js

Utilities for the Eluvio Content Fabric

const {CheckedCredentialSet, CredentialSetModel} = require('../models/CredentialSet')
const {NewOpt} = require('../options')

const JSON = require('./JSON')

const blueprint = {
  name: 'CloudAccess',
  concerns: [JSON],
  options: [
    NewOpt('credentials', {
      descTemplate: 'Path to JSON file containing credential sets for files stored in cloud',
      group: 'Cloud',
      normalize: true,
      type: 'string'
    })
  ]
}

const New = context => {
  const J = context.concerns.JSON

  const credentialSet = (errOnMissing = true) => {
    let retVal
    if(context.args.credentials) {
      retVal = J.parseFile({path: context.args.credentials})
    } else {
      if(!context.env.AWS_REGION || !context.env.AWS_BUCKET || !context.env.AWS_KEY || !context.env.AWS_SECRET) {
        if(errOnMissing) {
          throw Error('Missing required S3 environment variables: AWS_REGION AWS_BUCKET AWS_KEY AWS_SECRET')
        }
      } else {
        retVal = [
          {
            path_matchers: ['.*'],
            remote_access: {
              protocol: 's3',
              platform: 'aws',
              path: context.env.AWS_BUCKET + '/',
              storage_endpoint: {
                region: context.env.AWS_REGION
              },
              cloud_credentials: {
                access_key_id: context.env.AWS_KEY,
                secret_access_key: context.env.AWS_SECRET
              }
            }
          }
        ]
      }
    }

    // validate
    return CheckedCredentialSet(retVal).either(
      () => { // error case
        if(errOnMissing) {
          // throw error
          CredentialSetModel(retVal)
        } else {
          return null
        }
      },
      () => retVal // ok case
    )
  }

  return {credentialSet}
}

module.exports = {blueprint, New}